Ultrafiltration integrated equipment is a complete skid-mounted water treatment system integrating all functional units for industrial water purification and wastewater recovery. As an all-in-one modular liquid filter with centralized control, this integrated unit can be matched with large-scale Industrial Skid Mounted Ultrafiltration Equipment, anti-fouling core Tubular Ultrafiltration Membrane, standard finished Ultrafiltration machine and basic Ultrafiltration equipment to form customized treatment schemes for clean water preparation and sewage reuse projects with different water volume and water quality conditions. This paper systematically expounds the structural composition, membrane separation working mechanism, unified technical indicators, strict manufacturing quality control system and multi-industry practical application scenarios of ultrafiltration integrated equipment, helping global industrial purchasers select matched integrated ultrafiltration solutions according to actual project demands.
Complete Ultrafiltration Integrated Equipment for Industrial Water Filtration Projects
Ultrafiltration integrated equipment is a complete skid-mounted water treatment system integrating all functional units for industrial water purification and wastewater recovery. As an all-in-one modular liquid filter with centralized control, this integrated unit can be matched with large-scale Industrial Skid Mounted Ultrafiltration Equipment, anti-fouling core Tubular Ultrafiltration Membrane, standard finished Ultrafiltration machine and basic Ultrafiltration equipment to form customized treatment schemes for clean water preparation and sewage reuse projects with different water volume and water quality conditions. This paper systematically expounds the structural composition, membrane separation working mechanism, unified technical indicators, strict manufacturing quality control system and multi-industry practical application scenarios of ultrafiltration integrated equipment, helping global industrial purchasers select matched integrated ultrafiltration solutions according to actual project demands.
Ultrafiltration integrated equipment refers to the finished ultrafiltration system that concentrates membrane modules, feed pumps, circulating pipelines, automatic backwash assemblies, CIP chemical cleaning tanks and PLC intelligent control cabinet on an integral stainless steel skid frame. Different from users purchasing scattered pipes, pumps, membrane elements and electrical components for self-assembly, all pipeline layout, component assembly, sealing detection and program linkage debugging of our ultrafiltration integrated equipment are completed in the factory workshop. Customers only need to connect raw water pipeline, produced water pipeline, drain pipeline and power supply on site to realize quick commissioning and operation, greatly shortening project construction cycle and reducing the hidden danger of system failure caused by non-standard self-matching.
Our product line divides ultrafiltration integrated equipment into multiple specifications to meet differentiated project demands. For medium and large industrial park centralized wastewater treatment and high-flow pure water pretreatment projects, customers can choose expanded layout Industrial Skid Mounted Ultrafiltration Equipment with ultra-large membrane loading capacity. When the processing medium is oily wastewater, electroplating wastewater, coating wastewater and other high-fouling waste liquid, we will use anti-blocking Tubular Ultrafiltration Membrane as the core filter element inside the integrated equipment to improve the system’s tolerance to high-concentration pollutants. For conventional factory domestic water, surface water purification and small-scale sewage recycling projects, the compact Ultrafiltration machine and economical basic Ultrafiltration equipment are the most cost-effective integrated configuration options.
The frame of all ultrafiltration integrated equipment is made of 304 stainless steel overall welding, with strong corrosion resistance and structural stability, adapting to indoor production workshops, outdoor sewage stations and semi-open water treatment areas. The mainstream filter material is modified PVDF hollow fiber membrane, which can stably intercept suspended solids, colloids, bacteria, viruses and macromolecular organic matter in water while retaining beneficial mineral substances in water. The built-in PLC control system supports fully unattended automatic operation: the system automatically executes backwashing according to operating time or pressure difference to flush pollutants attached to the membrane surface; when long-term operation causes membrane flux attenuation, the matched chemical cleaning system can be started with one key to remove inorganic scale and organic biofilm and restore the rated water production capacity of the membrane components.
As the mainstream pretreatment device of pure water production lines, ultrafiltration integrated equipment can effectively reduce the SDI value of inlet water for subsequent reverse osmosis equipment, avoid RO membrane fouling and clogging, and effectively extend the service life of the whole water treatment system, which has been widely recognized by industrial customers in chemical, food, pharmaceutical, printing and dyeing industries.
The core operation mechanism of ultrafiltration integrated equipment is pressure-driven cross-flow physical sieving separation. After raw water is boosted by the feed pump inside the integrated frame to the stable operating pressure of 1.0–4.0 bar, the fluid flows tangentially along the surface or inner cavity of the built-in membrane elements at a fixed flow rate.
Water molecules and dissolved inorganic small molecular salts pass through the micropores of the membrane selective layer smoothly to form qualified permeate clean water, which is collected and delivered to the clean water tank through the water production pipeline. Pollutant particles, colloidal flocs, microbial colonies and organic macromolecules larger than the membrane molecular weight cutoff are trapped on the membrane surface. The high-speed tangential cross-flow continuously scours the membrane surface, slows down the accumulation speed of dirt, and most intercepted pollutants are discharged out of the equipment along with the concentrated water flow.
Two sets of automatic maintenance logic are solidified in the control program of ultrafiltration integrated equipment to ensure long-term stable operation. The first is regular automatic backwashing, which uses the clean water produced by the equipment to reversely penetrate the membrane layer to peel off loose surface dirt, and runs automatically in daily operation without manual intervention. The second is periodic CIP chemical cleaning: acidic medicament removes inorganic scale precipitation, and alkaline medicament decomposes organic biofilm when backwashing cannot recover the design water flux. If the integrated equipment is equipped with tubular membrane elements, online sponge ball physical cleaning can be added as an auxiliary cleaning method to cope with severe fouling wastewater working conditions.
Standard membrane material: Modified industrial PVDF; PES membrane optional for food and pharmaceutical sanitary requirements
Optional MWCO specifications: 30 kDa, 50 kDa, 100 kDa
Design operating flux: 25 ~ 85 LMH (adjusted according to raw water pollutant concentration)
Allowable continuous operating temperature: 5℃ ~ 45℃
pH tolerance range: Continuous operation pH 2–11; chemical cleaning impact tolerance pH 1–13
Optimal stable working pressure: 1.5 bar ~ 3.0 bar
Comprehensive water recovery rate of the whole set of equipment: 80% ~ 93%
Effluent turbidity index: Stably lower than 0.1 NTU
Bacteria interception efficiency: ≥99.99%
Outlet water SDI value: ≤3, fully meet the inlet water standard of reverse osmosis equipment
Frame material: 304 stainless steel integrated skid support frame
Control system: PLC + local touch screen intelligent control, with automatic fault alarm function
Automatic backwash cycle: Adjustable range 15 minutes ~ 60 minutes
Recommended chemical cleaning cycle: 2 ~ 6 months determined by actual inlet water pollution level
Customizable water production tonnage: 1T/h, 5T/h, 15T/h, 50T/h, 100T/h mainstream standard models
Each set of ultrafiltration integrated equipment produced by LEFILIER implements full-process closed-loop quality inspection from raw material incoming inspection to finished product delivery. Before membrane assembly, each batch of hollow fiber membranes and tubular membrane elements must pass the bubble point integrity test one by one to screen out defective products such as fiber fracture and membrane pore leakage, ensuring stable pollutant interception performance of core filter materials.
Stainless steel frame welding and internal pipeline connection adopt professional argon arc welding process, all water-wetted contact parts use anti-corrosion materials to prevent secondary pollution of effluent water quality. After the overall assembly of the integrated equipment is completed, each finished product will pass FAT factory acceptance test before delivery; simulate real water inlet operating conditions to test water yield stability, pressure difference change, valve action response and automatic program execution logic, and deliver goods only after all test indicators are fully qualified.
Our ultrafiltration integrated equipment series has obtained ISO9001 quality management system certification, CE EU safety certification and NSF61 drinking water material safety certification. Under standardized operation and regular maintenance, the service life of built-in PVDF membrane components can reach 5–8 years, effectively reducing the long-term membrane replacement and equipment maintenance costs for enterprise users. Each set of integrated equipment is equipped with complete operation manual and quality inspection report for after-sales traceability.
Relying on integrated installation, convenient commissioning, simple operation and stable effluent quality, ultrafiltration integrated equipment is widely applied in multiple industrial and municipal water treatment scenarios:
Factory pure water pretreatment: Remove colloids, suspended solids and microorganisms in raw water to protect downstream reverse osmosis membrane elements
Industrial wastewater recycling: Tertiary advanced treatment of factory biochemical wastewater for workshop flushing, green irrigation and cooling water replenishment
Municipal surface water purification: Treat river water, lake water and reservoir water to prepare factory self-supplied production water and domestic water
Food and beverage processing water purification: Purify process water for dairy, fruit juice and brewing industries to remove microorganisms while retaining natural nutrients
Pharmaceutical purified water preparation: Remove pyrogen and endotoxin as the front-end filtration unit of pharmaceutical water production system
Electroplating, printing and dyeing wastewater treatment: Match tubular membrane components to treat oily wastewater and realize water resource recovery
Q1: What is the biggest advantage of ultrafiltration integrated equipment over scattered assembled ultrafiltration components?
A: All assembly, pipeline layout and program debugging are finished inside the factory. Users only need to connect pipelines and power supply on site, which shortens construction time, reduces matching errors and lowers the professional operation threshold for enterprises.
Q2: Can ultrafiltration integrated equipment remove dissolved salt and reduce the TDS value of produced water?
A: Ultrafiltration only intercepts particulate pollutants and microorganisms, dissolved salt ions can freely pass through membrane pores. If desalination is required, this integrated equipment must be used as pretreatment matched with reverse osmosis systems.
Q3: What is the service life of PVDF membrane fitted inside ultrafiltration integrated equipment?
A: With regular automatic backwashing and periodic chemical cleaning, standard PVDF hollow fiber membranes can operate stably for 5–8 years. Replace membranes if flux cannot recover after complete cleaning or effluent turbidity rises abnormally.
Q4: Do I need to customize internal membrane configuration for different types of industrial wastewater?
A: Hollow fiber membranes fit clean raw water and general sewage; oily, high-solids wastewater needs tubular ultrafiltration membrane as the core filter medium inside the integrated unit.
Q5: Does standard ultrafiltration integrated equipment support remote real-time monitoring of operating data?
A: Standard configuration is local PLC control; remote data viewing and fault reminder functions can be added through customized communication modules according to customer demands.
Q6: What damage will long-term lack of cleaning bring to ultrafiltration integrated equipment?
A: Dirt and biofilm will accumulate on the membrane surface, causing continuous flux decline, rising system pressure difference and deteriorated water quality. Severe fouling will cause irreversible damage to membrane elements and lead to scrapping.
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